Non-skid safety device



UNITED STATES PATENT oFric.

NON-SKID SAFETY DEVICE.

esem- 13.

`Specification of Letters Patent. Patented Sept. 2t), 1921,

Application filed August 25, 1920. Serial-No. 405,892;

To all whom it may concer/n:

Be it known that I, NoRvAL RUNs'mrLER,

a citizen of the United States, residing at Seattle, in the county of King and State of Washington, have invented a certain new and useful- Improvement in Non-Skid Safety Devices, of which the following is a s ecification.

y invention relates to sanding devices which are particularly adapted for use upon automobiles.

I shall describe my invention in connection withautomobiles, although it can be used with slight and obvious changes upon other vehicles, if desired.

The principal object of my invention is to provide such a device in which the sand will be freely delivered to a tra therein until it is positively expe led by the admission of fluid' pressure behind the sand in the trap.

Another object is to rovide an improved valve for controlling he admission of exhaust gases from the automobile engine to ex el the sand from the trap.

y invention comprises those novel parts and combinations thereof which are shown in the accompanying drawings, described in the specification, and particularly defined by the claim terminating the same.

. In the accompanying drawings I have shown m invention in the form which is now pre erred by me.

Figure 1 is a section and partial elevation through my device.

Fig. 2 is an elevation of the valve casing and the valve operating means.

Fig. 3 is a section on the line 3-3 of Figs.7 1.

here sand is to be expelled by the exhaust from an internal combustion engine I secure a valve casin 2 in the exhaust` line from the engine. he pipe 11 represents this exhaust pipe. It is secured in the casing 2 by suitable means, such as the screw 16. The casing 2 is provided with two outlets one serving as the normal exhaust or leadin to the mufiier not shown) and the othery eadin to a san trap.

Between t e ort leading from the pipe 11 and the' normal) outlet of the casing, 'I provide a valve seat 4, and between the pipe 11 and the sand trap 9 I provide a second valve seat 5. Within the casing and reciprocable between the two valve seats, whlch are shown herein as opposed, is a plunger 3,

and held l formed with valves at each end adapted to seat uplon the respective seats 4 and 5 to close t em selectively. Suitable means for actuating the valve are provided, those shown consisting of a lever 6 pivoted upon the casing at 12 and engaging the stem of the valve, and a bell crank lever 8 pivoted at 15 upon the casing, and connected to the lever 6 by a link 7, which is pivoted at 13 u on the lever 6 and lat 14 upon the lever 8.

he lever 8 may be swung by any suitable means, preferably manual means, operable from the drivers seat, to reciprocate the valve 3 through the motion of the lever 6. It may be found desirable to employ, in connection with the sand trap to be later described, another form of two-way valve and I do desire to limit myself to the construc` tion described other than as defined inthe ap ended claim. f

e sand trap 9, which` is connected to one outlet from the valve casing 2 is shown as formed of a section of ipe. t extends first laterally from the casing 2 and is then bent downwardly and then preferably upwardly to form a osenec The upper wall of the downwar ly bent portion should be at least as low as the lowerinost wall of the straight portion leading from the casing 2. The outer end of the pipe 9, being bent upwardly, assists in retaining the sand in the gooseneck. A supply vipe 10,

pass out of the uppermost outlet from thev casing 2. Sand running down the pip? 10 gathers in the gooseneck 9 until this 1s led as shown in Fig. 1, but does not run out of the delivery nozzle, the pipe being suiiicientl long and upturned to prevent. When it is esired to deliver sand to the path of the automobile, the lever 8 is swung on its pivot to raise the valve 3 to the seat 4. This motion closes the normal outlet of the exhaust and ap lies the full force thereof to expel the sand) from the gooseneck 9. The sand is thus blown first from the top of what is gathered in the gooseneck, in this way providing a passage for the exhaust an permitting the remainder of the sand to be sucked through to be delivered where'desired. Additional sand will be supplied through the pipe 10' unless a valve 1s employed to prevent this. Whether or not such a valve is used is lar ly immaterial, though I prefer to omit thls. When the need for sand has passed, the Valve 3 may be a ain reseated upon the seat-5, thus closing o the i pressure in the gooseneck 9 and permitting otherwise than by an internal combustion engine, the valve would control only the admission of other fluid pressure, as compressed air, to the sand trap. The exhaust outlet from the casing 2 would then naturally be omitted, or employed for another purpose.

What I 'claim as my invention is:

In a sanding device for automobiles, a sand trap and means for delivering sand.' thereto, a valve casin adapted to be connected to the engine ex aust, and having two outlets, one being connected to said trap, said casing having two opposed Seats, a plunger reciprocable 1n the casing and having valves at its opposite ends adapted to seat selectively upon said valve seats, to lpermit normal exhaust or to admit air behind the sand in said trap to 'expel it.

NORVAL RUNSTETLER. 

